US2647767A - Valved pipe coupling for suction lines - Google Patents

Description

Aug. 4, 1953 A. E. ANDERSON VALVED PIPE COUPLING FOR SUCTION LIN Filed March 4. 1948 INVENTOR Austin 5. Anderson ATTORN EYJ Patented Aug. 4, 1953 FF ICE PIPE DQUPLING FOR SUGTION LINES Austin E. Anderson, Jan'iestowmlN. Y.

AppIicationMarch 4, 1948,'Sel=ial No. 1.2;955 9 (01. 28449.)

.llhis invention relates to the dairy equipment :art and primarily to an improved installation lfor effecting the milking operations throughitheiim by another operation to :turn a ;valve for wopening the suction influence to r the machine. After the milking of a -,.cow flS completed a reverse aseguence is-resorted to, with likelihood-of the hose becoming disconnected accidentally and the suction then intaking into thepiping some-ofthe litter and other clogging foreign matter .as the hose falls into the'bedding.

The primary object of the present ;.in;vention isto provide an improvedmilkin g .apparatushy which the milking operation :m y ebe facilitated aswell as expedited in a practical and time saving manner.

. 'Again, the invention will be foundftogreside in an installation in which foreign I-matter will be precluded from entering the pipe system "and, further, one which will insure more reflective sanitation throughout.

Furthermore, the invention has for its object to provide a simple and durable construction .which :is efficient in use and capable ;of .giving satisfactory performance. p .The foregoing and other objects "Will'manifest themselves as this description progresses where-- in .reference is made to the accompanying drawingin which I p p H Fig. 1 is a general view showing the practical application cfmy-invention; I r p Fig. 2 is a longitudinalsectional view through apart of the installation depictin-g more clearly the particular embodimentof-thelinuentive conpt; M

Fig. 3 is a plan view, partl-yin section, .of the milking machine connector;-and I h v Fig. 4 is a sectional View of a slightlymodified .form of the invention. 7 H V Referring more particularly to the: drawing, ;.the numeral idesignates the suction -manifold tor supply pipe which is located above the stalls {:2 and runs crosswise'at the headthereof. -At'-suit-- able intervals, preferably at every isecondzstall, lateral branches or fittings ,3 :are :pmvided afor selective connection by hose =4 to the .pulsator mechanism of a milking 'machinevifi. -Ordi narily, the branch 3 is equipped with a hand adjusted .valve on which the hose .forced :preliminaryto opening the valve.

.In accordance with the .present invention,

nneansare z-p fovided to close the lateral branch 3 automatically .and ,to maintain it closed against :thegiactionpf'the internal negative pressure. For :thismurpDSQ, a coupling member or nipple I ,is permanently attached to the lateral branch and .is provided with-an internal seat 8 and a valve 9 :seating thereonunder the-urge of a coiled spring t0, ,The 'valve stem H extends outwardly through the valve seat -8 and into abell or-dished flange I52. nretaining ring 13, held in place by =a cotter pin M -.or other suitable means, supports the spring at one end-in opposition to an internal shoulder 4.5 ion the outer side of the valve seat for the opposite spring end. The valve '9 is in the form of :a tapered head and engages its seat close to the stem'where its diameter is small. Consequently, the-surface area-on which the suction or pressure difierential will act issmall with theresult. that'the spring It need exertonly a ,littleforce to counteract the pressure differential and -seat the avalve normally against air leakage -into thea-suction line ;l

Theadjoiningrend of .the'hose is also equipped .with a companion coupling member or nipple J 5, ,likewise provided with a bell I? into which .extends the end of the nipple, as shown at [8. This endlmay be formed with transverseslots l9 f or@constantcommunication with the interior of :the .bell H regardless of whether or not the .strainerzorfiltersheet 2%} is in engagement with the open-end A8. The filter sheet is secured about its .marginal portion by means of a heavy disk 2| which may be of circular shape and design .for .being sprung into an annular seat or groove :22 :pressed .into the side cylindrical wall 230i thebelldl. This formation maybe convenientlygiven through a spinning or other operation. The disk 2-! is preferably formed from a rather thick sheet of rubber, or like resilient .niaterial, -,ar d at its center is reinforced by -fiankinglmetal disks 24 united by a stem 25. Aboutthis' centralreinforcement the rubber disk .orjjb od'y is provided with an annular series of openings iZBDl/EI which the filtersheet extends. $hetifnessnf the rubblerfrom which the disk 2| is shaped is sufficient to support :the same :in a generally dished or concave shape, :as shown .ingFig. .-2. This -.di sposes the-disk 1-2 3 on' the convex .side thereof Fanoi in a suspended position to engage the .valve stem ll for unseatin :the valve .whenthe complementalbells l land-l T are fitted together. lThelfiow of .airxwill then 'beirom the .pulsator 5 through the hose 4 into the .bell -la7 through the ,-filter:sheet dihand apertures :26 into the ibell I I2 landout through the "port of the .valve seat 8 into the suction line I, the valve being supported in its open position by the resilient disk 2| against the pressure of spring in. Any foreign matter picked up by the air stream, passing through the hose 4 will be lodged in the chamber 21 of bell [l as it is filtered out by the sheet 20. Likewise, any milk which may be drawn into the tube will also be retained in this chamber against passage into the system.

To facilitate the placing of the nipple unit l6, l1 against the nipple unit 1, 12, the cylindrical Wall 23 is formed with a guiding flange 28 of flaring contour which will serve to deflect and;

guide the rounded or beaded periphery 29 of the bell I2 within the cylindrical portion 23, and immediately upon the valve 9 being unseated the pressure difierential acting on the bell I! will urge the marginal portion of the rubber disk 2| into resilient contact with the marginal portion 29 of the bell 12 to firmly seat and seal the contact against air leakage. The rubber disk will therefore have an air tight engagement with both bells and 'by reason of the pressure differential the cooperating parts will be firmly held in this air tight relation as long as the milking operation continues. Upon completion of the milking operation a quick whip or movement of the hose 4 laterally, such as to a position indicated by the broken lines 4' in Fig. 2, will break the air tight seal and tilt the bell ll upon the fixed bell l2 whereupon the spring It] will act against the suction line pressure to seat the valve 9 and thereby close the nipple 1 against free entrance of air into the system.

The milking installation is practical in that the mere placement of the bells one upon the other will automatically establish a communication between the milking machine and the low pressure of the system. The axial alignment of the two bells will be insured under the action of the pressure difierential and will be automatically accomplished without effort on the part of the attendant. The unseating of the valve 9 will be efiected by a cushioned action through the resilient suspension of the disk 24, and after the suction line communication has been established the rubber disk will assume a slightly dished contour by reason of the pull exerted by the hose 4 on the sealing contact with the rolled edge 29 of the bell [2. The resilient disk 2| may readily be replaced for renewing the filter sheet 20 and for cleaning the chamber 2'! as occasionally required.

In place of the rubber or resilient'support 2| a rigid member 24, Fig. 4, may be provided, this being shown as a U-shaped member spot Welded to the bell-ll, with an annular resilient member or disk 2| fitting in the seat 22.

The construction is simple and economical in production, and while the foregoing description has been given in detail it is not intended thereby to limit the invention since the inventive principles involved are capable of assuming other .physlcal embodiments without departing from the spirit of the invention and the scope of the appended claims.

What is claimed is: t

1. A stall cock coupling for milking machine installations, comprising a stall cock having a spring pressed shut-off valve normally closing the same, and a hose coupler cooperating with the stall cock to open the valve, the stall cock and the coupler each having a bell fitting at their marginal portions one within the other, one bell having an encircling wall for receiving the other 4 bell, such circular wall being provided with a seat forming groove, and a resilient perforated disk expanded into the groove in interlocking engagement with the wall and having a central portion serving to open the valve upon bringing the bells together.

2. A stall cock coupling for milking machine installations, comprising a stall cock having a spring pressed shutofffvalve normally closing the same, and a hose coupler cooperating with the stall cock to open the valve, the stall cock and the coupler each having a bell fitting at their marginal portions one within the other,

' one bell having an encircling wall for receiving the other bell, such circular wall being provided with a seat forming groove, and a resilient perforated disk expanded into the groove in interlocking engagement with the wall and having a central portion serving to open the valve upon bringing the bells together, the encircling wall having a flaring mouth to receive and direct the placement of the complemental bell upon the stall cock bell.

3. A stall cock coupling for milking machine installations, comprising a stall cock having a spring pressed shut-off valve normally closing the same, and a hose coupler cooperating with the stall'cock to open the valve, the stall cock and the coupler each having a bell fitting at their marginal portions one within the other, one bell having an encircling wall for receiving the other bell, such circular Wall being provided with a seat forming groove, and a resilient perforated disk expanded into the groove in interlocking engagement with the wall and having a central portion serving to open the valve upon bringing the bells together, the resilient disk forming a seat for the marginal portion of the stall cock bell and held in air tight relation therewith by the pressure differential acting on such parts.

4. A stall cock coupling for milking machine installations, comprising a stall cock having a spring pressed shut-off valve normally closing the same, and a hose coupler cooperating with the stall cock to open the valve, the stall cock and the coupler each having a bell fitting at their marginal portions one within the other, one bell having an encircling wall for receiving the other bell, such circular wall being provided with a seat forming groove, and a resilient perforated disk expanded into the groove in interlocking engagement with the wall and having a central portion serving to open the valve upon bringing the bells together, the marginal portion of the stall cock bell being rolled to seat upon the resilient disk in air tight relation and with sufficient clearance with respect to the encircling wall to enable tilting of the complemental bell upon the stall cock bell for breaking the air tight seal in effecting disconnection of the milk ing machine from the supply line.

5. A stall cook coupling for milking machine installations, comprising a stall cock opening through a bell, a valve normally closing the stall cock passage and having an actuating part extending into the bell, a hose coupler also having a bell cooperable with the stall cock bell for connecting a milking machine hose to a supply line, the coupler bell having an encircling bell receiving wall, the other bell fitted at its marginal portion within said wall, said coupler bell being provided with an annular seat forming groove, and a resilient perforated disk mounted within the bell groove and having a central portion in engagement'with the valve part thereby serving to open the valve upon bringing the bells together, the coupler bell having an extension into its bell in coaxial opposition to the valve part to give support to the central portion of the resilient disk.

6. A stall cock coupling for milking machine installations, comprising a stall cock opening through a bell, a valve normally closing the stall cock passage and having an actuating part extending into the bell, a hose coupler also having a bell cooperable with the stall cock bell for connecting a milking machine hose to a supply line, the coupler bell having a marginal portion encircling the marginal portion of the other bell and provided with an internal annular seat, and a resilient disk engaged in the bell seat, the coupier having a part to open the valve upon bringing the bells together, the resilient disk being held against the marginal portion of the stall cock bell in air tight relation therewith by the pressure differential acting on the two bells, the marginal portion of the stall cock bell being rolled to seat upon the resilient disk in air tight relation and with suflioient clearance with respect to the encircling marginal portion of the hose coupler bell to enable tilting of the latter upon the rolled margin for breaking the air tight seal in effecting disconnection of the coupler from the stall cock.

7. A stall cock coupling for milking machine installations, comprising a stall cock member, a valve normally closing the member, a stall cock coupler member cooperable with the stall cock member for connecting a hose to a supply line,

the stall cock and coupler members having bell portions one telescopically fitted one within the other, the valve having a stem engaged by a part on the companion member to open the valve when the members are assembled, said coupling member having an internal seat, a resilient perforated disk having its peripheral margin sprung into the seat for support and having a central imperforate part serving to open the valve upon bringing the bell portions together, said disk having a portion radially inwardly from the seat engaged margin on which the inner bell portion of the stall cock has sealing contact, and a flow pipe section extending into the coupler member to give support to the central part of the disk and having lateral means of communication with the interior of the companion member.

8. A stall cock coupling comprising a bell-like coupler member having a substantially axial support provided with a fluid flow passage opening thereinto, the inner side wall of the bell of the coupler having a circumierentially extending seat, a resilient perforated disk sprung into interlocking supporting engagement with the seat and having an imperforate central part engaged with and supported by said axial support, and a stall cook having a normally closed valve engaged by the supported central part of the disk for holding the valve opened.

' 9. A stall cock coupling for milking machine installations, comprising a stall cock opening through a bell, a valve normally closing the stall cock passage and having an actuating part extending into the bell, a hose coupler also having a bell cooperable with the stall cock bell for connecting a milking machine hose to a supply line, the coupler bell having a marginal portion encircling the marginal portion of the other bell and provided with an internal annular seat, and a resilient disk engaged in the bell seat and formed in its central portion with an opening therethrough, the coupler having a part acting through the disk opening upon the valve to open the same upon bringing the bells together, the resilient disk being held against the marginal portion of the stall cock bell in air tight relation therewith by the pressure differential acting on the two bells, the marginal portion of the stall cock bell being rolled to seat upon the resilient disk in air tight relation and with sufiicient clearance with respect to the encircling marginal portion of the hose coupler bell to enable tilting of the latter upon the rolled margin for breaking the air tight seal in effecting disconnection of the coupler from the stall cock.

AUSTIN E. ANDERSON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 198,584 Eames Dec. 25, 1871 541,908 Weaver July 2, 1895 875,706 Good Jan. 7, 1908 1,137,551 Taby et a1, Apr. 27, 1915 1,205,686 Uhl Nov. 21, 1916 1,362,522 Biette Dec. 14, 1920 1,497,283 Petrequin June 10, 1924 1,588,898 Martocello June 15, 1926 1,758,443 Jansson May 13, 1930 1,854,797 Kirkpatrick Apr. 19, 1932 2,136,803 Newmark et al Nov. 15, 1933 2,251,071 Scott July 29, 1941 2,256,717 Kors Sept. 23, 1941 2,277,229 Hulbert Mar. 24, 1942 2,450,461 Wallach Oct. 5, 1948 FOREIGN PATENTS Number Country Date 121,863 Great Britain Jan. 9, 1919

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